The photon energy dependence of the 5p⁴nd(²S_1/2)(n=5-7) correlation satellites in Xe from 40.8 to 150 eV

We have carried out a high resolution photoelectron spectrometry study of the 5p4nd(2S1/2) (n=5-7) correlation satellites of Xe from a photon energy of 40.8 to 150 eV. The absolute cross sections of these satellite lines follow very closely the shifted and scaled cross section of the 5s main line. The relative intensities of these satellites with respect to the 5s main line at 72 eV are in very good accord with one of the most recent measurements, confirming that all theoretical predictions for the relative intensity of these satellites are too high. We have also determined the angular anisotropy parameter, beta , for these satellites. While the 5d(2S1/2) satellite closely follows the beta value of the 5s main line, the other two satellites do not. These satellites slowly approach beta =2 with the 6d(2S1/2) satellite approaching faster than the 7d(2S1/2) satellite. We also show that there is no major discrepancy between the relative intensity of the 5d(2S1/2) satellite and the main 5s line at the intermediate photon energies reported here and in the high energy limit of 1487 eV reported by Svensson et al. (1988)